. The Conchologists' exchange. Mollusks. 84 THE NAUTILUS. lacking entirely, there being one broad dorsal band of darker reddish brown, bounded on each side by a narrow row of more or less connected black spots. In the eighteen specimens of this lot examined, all possessed a rudimentary shell. In many cases, in spite of the greatest care in making the incision in the mantle, the shell had become dislodged from its normal position. In eight specimens it re- mained attached to the animal when found. In all of these specimens it was adherent to the outer surface of the inner membrane or peritoneum
. The Conchologists' exchange. Mollusks. 84 THE NAUTILUS. lacking entirely, there being one broad dorsal band of darker reddish brown, bounded on each side by a narrow row of more or less connected black spots. In the eighteen specimens of this lot examined, all possessed a rudimentary shell. In many cases, in spite of the greatest care in making the incision in the mantle, the shell had become dislodged from its normal position. In eight specimens it re- mained attached to the animal when found. In all of these specimens it was adherent to the outer surface of the inner membrane or peritoneum, and not connected in any way to the inner surface of the mantle. It also, in the specimens in which it remained fastened, was always in the posterior quarter of the animal, and over some portion of the liver. In two of the eight specimens it occurred on the left side, in two directly on top, and in four on the right side of the liver. The diagram (fig. 1) was made from a specimen (M. C. Z. 48211 H) meas- uring 40 mm. in length in a considerably contracted condition. On opening the mantle, the position of the shell was found to be 5 mm. from the posterior extremity of the animal and on. .01 r>n-,. Figs. 1. 2, o. Philomycus carolinianus (Bosc), Hudson, Oliio. Fig. 4, P. rnshi, ii. sp. the right side. It is of a light horn color, transparent, very iridescent, thin, delicate, wrinkled. It measures .5 mm. in length and .25 mm. in width. In appearance it greatly re-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Averell, William D. Philadelphia, Wm. D. Averell
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectmollusks, bookyear188
